Would we expect negative views of tube feeding from the patient in this context?
Given what they're already going through, I would expect severe ME patients to be very positive toward tube feeding, although enduring the act of placing them would no doubt be a dreadful burden, as documented by Whitney Dafoe's family, for example. It would need a light touch, calm, quiet, sensitivity and flexibility on the part of the interventional team. If I were doing this now and from what I've learned here, I would know to be quiet and work in low light as much as possible, which is perfectly feasible when you have x-ray vision

Here I would draw the analogy with much of medical care involving children - it takes more time and will often be seen as "less efficient" than the typical adult patient with a well understood problem list. The flip side is positive medical interventions will often have a much longer runway in terms of improved quality of life over time.
In my experience families typically go to great lengths to protect these types of tubes, viewing them as a literal life-line. Patients would often come in with devices broken or blocked, or hanging on by a thread having been jury-rigged by the family at home. Once we started employing these types of long-term tubes more frequently around 20 years ago and we realised they were then often coming in acutely with device failure (usually on the weekend or holiday), our nursing team set up a system of pro-active changes, planned for a time that suited everyone. Families might be coming from 100s of km away. They developed a patient database and tried to work out the variables that led to longer or shorter device lifetime (eg nutrient, medication mix) in individuals, and liaised with our suppliers who were very helpful with advice for increasing device lifetime (GJTs are NZD 4-500 last time I checked). Our colleagues in ED very much appreciated this too, reducing acute presentations, or they were able to simply take a phone call and arrange for the family to come directly to us the next morning and save an encounter and overnight admission.
Patients with these type of long-term tubes may have profound neurological impairments with very limited communication, but I found it not uncommon to have the pleasure and gratitude conveyed by the patient, not just the family, following replacement, even when the process was clearly going to be painful through a sometimes excoriated gastric stoma. We would see them over many years and so built up a relationship with these kids and their families and you would learn particular articulations or brief facial expressions - not something a superficial view would ever realise.
Tubes can of course come out, but that is often accidental, maybe catching with wheelchair transfers, or related to uncontrolled movements. In contrast, the severe ME patient, lying quietly in a darkened room might be expected to have very stable tube positioning, unless vomiting is a major factor. As far as I've seen patients with anorexia nervosa are generally the only ones that might deliberately pull an NGT, but even then that seems less common than you might have thought - although I might have a very limited view on that, as we usually only get involved for complicated NGT placements. (AN being a whole other conversation in terms of
possible biological causes.)